Air Quality in Louisville, United States

Windy
22.1°C · 14.2% humidity
22.1°
Feels 22.1°
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
17 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
13 6pm
13
13
23 9pm
20
18
17 12am
16
15
14 3am
14
14
13 6am
15
15
15 9am
15
13
12 12pm
12
12
12 3pm
12
12
Station readings
2
CAMS model adj -12
25
25
25
25
25
25
25
25
25
25
25
25
25
27
27
27
27
25
24
24
24
24
24
24
AD 728×90

Air Quality Index Trend

9h · 1 stn

Louisville's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

14.2%
Humidity
55.4 km/h
Wind WSW
1004.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
23
5.6 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Louisville?

Temperature & Precipitation

PM2.5 Trend

9h · 1 station
PM2.55.6 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (17 stations within 25 km)
5.6
Median
5.65
Average
3.56
Low
11.8
High
PM2.5 µg/m³ · Model: 6.0 · Bias: +0.4

What is the 7-day forecast for Louisville?

06-09
35.7° 18.4°
06-10
31.0° 13.0°
06-11
29.5° 14.5°
0.13 mm
06-12
32.4° 14.4°
0.88 mm
06-13
35.0° 13.9°
0.38 mm
06-14
27.0° 19.9°
1.25 mm
06-15
26.4° 13.0°
0.19 mm
Both models agree Avg diff: 5.0°C

Where are air quality stations near Louisville?

31
Athens, Boulder-CU, Colorado, USA
12.2 km PM2.5: 7.4 µg/m³
–
united-states-of-america-boulder-joslyn-court
13.7 km
35
Northwest Open Space
13.8 km PM2.5: 8.5 µg/m³
27
Westminster Town Hall
14.7 km PM2.5: 6.4 µg/m³
26
Silver Creek
15.2 km PM2.5: 6.2 µg/m³
21
North Mor Elementary School
17.0 km PM2.5: 5.0 µg/m³
18
North Star
18.0 km PM2.5: 4.4 µg/m³
18
Trail Winds Recreation Center
18.1 km PM2.5: 4.4 µg/m³
28
Fremont Elementary School
18.3 km PM2.5: 6.6 µg/m³
18
Thornton Community Park
18.9 km PM2.5: 4.4 µg/m³

What cities are near Louisville?

24 Broomfield 21 Erie 20 Boulder 21 Northglenn 20 Thornton 22 Sherrelwood 25 Arvada 20 Longmont 24 Wheat Ridge 23 Commerce City
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T03:15 UTC.